Author | A. Shane Anderson, MD


Aspiration and injection of the knee

September 29, 2008

ABSTRACT: Acute pain in the knee and its surrounding structuresmay be related to fractures, septic and inflammatory arthritis,ligamentous and meniscal injuries, or tendinous strains. Chronicsymptoms often result from osteoarthritis and inflammatoryarthritides, bursitis, and tendinitis. Aspiration and analysis of kneesynovial fluid is a safe and reliable means of diagnosing many acuteand chronic conditions, and knee injection also remains an effectiveway to administer pain-relieving therapies. For aspiration of largeeffusions, the medial retropatellar and superolateral retropatellarapproaches are preferred because they permit access to the suprapatellarpouch. These two approaches may be used for aspiration orinjection or both. The anterior approach is convenient when onlyinjection is performed. (J Musculoskel Med. 2008;25:470-472)